상세정보
학술지
Simultaneous Photoadhesion and Photopatterning Technique for Passivation of Flexible Neural Electrodes based on Fluoropolymers
- 발행일
- 202012
- 출처
- Scientific Reports, v.10, pp.1-13
- ISSN
- 2045-2322
- 출판사
- Nature Research
- 협약과제
- 19ZH1400, 실시간 뉴런-컴퓨터 양방향 통신 및 생체모방 시냅스 기술, 정상돈
- 초록
- Herein, we introduce a method to simultaneously photoadhere a photocrosslinkable polymer to a plasma-treated fluoropolymer while photopatterning the photocrosslinkable혻polymer via a single-photo-exposure as a new electrode passivation technique. Photoadhesion was determined to result from plasma-generated radicals of the plasma-treated fluoropolymer. Crystallinity of the fluoropolymer was analysed to determine the photoadhesion strength through its effects on both the formation of radicals and the etching of fluoropolymers. Passivation feasibility of simultaneous photoadhesion and photopatterning (P&P) technique were demonstrated by fabricating an Au electrocorticography electrode array and modifying the electrode with electro-deposited metallic nanoparticles. Adhesion of sputter-deposited Au to the fluoropolymer was dependent on mechanical interlocking, indicated by the formation of Au clusters which are typically influenced by the surface temperature during the sputter-deposition and the glass transition temperature of the fluoropolymer. The adhesion of Au to the fluoropolymer without an additional adhesion promotor and the proposed P&P passivation technique would help prevent detachment of the electrode and the delamination of the passivation layer in fluoropolymer-based neural electrode.
- KSP 제안 키워드
- Adhesion promotor, Au clusters, Electrode passivation, Glass transition temperature, Mechanical interlocking, Plasma-treated, Sputter-deposited, Surface temperature, electrode array, metallic nanoparticles, neural electrode
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